Title:
SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND DEVICE CONTAINING SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/020964
Kind Code:
A1
Abstract:
The present application provides a secondary battery, a preparation method therefor, and a device containing the secondary battery. The negative electrode sheet of the secondary battery in the present application comprises a negative electrode current collector and a negative electrode film layer. The negative electrode film layer comprises a first negative electrode film layer and a second negative electrode film layer. The first negative electrode film layer is arranged on at least one surface of the negative electrode current collector and comprises a first negative electrode active material, and the second negative electrode film layer is arranged on the first negative electrode film layer and comprises a second negative electrode active material. The first negative electrode active material comprises artificial graphite, and the second negative electrode active material comprises natural graphite. The compacted density of the negative electrode film layer is less than or equal to 1.6 g/cm 3.
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Inventors:
WEI XICHEN (CN)
WANG DANDAN (CN)
WANG DANDAN (CN)
Application Number:
PCT/CN2022/108747
Publication Date:
February 01, 2024
Filing Date:
July 28, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/133; H01M4/583; H01M10/0525
Domestic Patent References:
| WO2021217639A1 | 2021-11-04 | |||
| WO2021217635A1 | 2021-11-04 |
Foreign References:
| CN104126242A | 2014-10-29 | |||
| CN112018326A | 2020-12-01 | |||
| JP2021005461A | 2021-01-14 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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